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Serga [27]
3 years ago
9

The most abundant elements in the universe are hydrogen and helium, but there are also small but significant amounts of heavier

elements in stars and planets and in our own bodies. Where did these heavy elements originate?
Chemistry
1 answer:
Stells [14]3 years ago
7 0

Answer:

in nuclear fusion deep in the interiors of stars

Explanation:

Nuclear fusion -

It is the type of reaction , where two or more atomic nuclei of the atom merges together to release two or more different nuclei along with some subatomic particles , is referred to as a nuclear fusion reaction .

The reaction can very well be done on stars , because of very high energy .

Hence , a nuclear fusion occurs deep inside the stars .

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What is the correct order for.the three steps of the scientific method ?
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1) make an observation that describes a problem, 2) create a hypothesis, 3) test the hypothesis
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3 years ago
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Physical and chemical changes and properties are observed and tested in order to confirm the identity of a substance or how a su
notka56 [123]

Answer:

(A) Use volume displacement and the mass of the rock to calculate density.

Explanation:

3 0
3 years ago
The Citric Acid Cycle produces this important high energy electron donor/shuttle that is used to power the Electron Transport Ch
Lapatulllka [165]

These citric acid cycle products are produced in your cells' mitochondria. NADH and FADH 2 start subscript, 2 end subscript are transferred to the electron transport chain during oxidative phosphorylation, where their high energy electrons will eventually fuel ATP production.

<h3>What is a Citric Acid Cycle?</h3>

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brainly.com/question/17089080

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5 0
2 years ago
If a 30-ft3 volume of air at 10 psig is compressed to 25 ft3 at a constant temperature, what would be the new pressure in psig?
Strike441 [17]

To solve this we assume that the gas in the problem is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

 

P1V1 =P2V2

P2 = P1V1/V2

P2 = 10 psig  x 30 ft^3 / 25 ft^3

<span>P2 = 12 psig</span>

<span>
</span>

<span>Therefore, decreasing the volume from 30 ft^3 to 25 ft^3 at constant temperature would increase the pressure to 12 psig.</span>

6 0
3 years ago
Please can you help me with this​
IgorLugansk [536]

Answer:

RQS + PQS = 180 ------- sum of angles on a

straight line

(2x + 14) + (x + 16) = 180

2x + 14 x + 16 = 180

2x + x + 14 + 16 = 180

3x + 30 = 180

3x = 180 - 30

3x = 150

x = 150/3 = 50

3 0
3 years ago
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